Valve-grinding tool.



l. B. RGSE.

VALVE GRINDING TOOL. MPLICATIQN man Dsc.4. 191s.

1,250,5 1 2 Patemed im. 18, 19W.

JQEBRUSQ UNITED sTATEs PATENT oEEToE.

JACOB` B. ROSE, OF CLEVELAND, OHIO, ASSIGNOR TO THE MARVEL ACCESSORESIll/[ANU- i FACTURING- COMPANY, OF CLEVELAND, OHIO, A CORPORATION. i

To all whom it may concern:

Be it'knownthatl, JACOB B. ROSE, citizen of the UnitedStates, residingat Cleveland, in the county of Cuyahogaand State of Ohio, have inventedcertain new and useful Improvements in Valve-Grinding Tools, of whichthe following is a specification.

Thisinvention consists in a valve grinding tool adapted tobe operated byhand, all substantially as' shown ,and described and particularlypointed outinthe claims.

In the accompanying drawings, Figure 1 is a; plan view of theftool withthe crank handle for operating the same in position as in Fig. 3. Fig. 2is a sectional horizontal plan on line 2 2, Fig. 3. Fig. 3 isa side'`elevation of the tool and a valve engaged thereby. Fig. 1 is a detail ofthe ball socket secured in the top of the casing. Fig. 5 is alongitudinal sectional elevation of the complete tool on line 5*-5,Fig. 1. Fig. 6 is a detail of, the Vthimble which `serves vafs a bearingfor the actuating shaft.

The idea of the invention is to provide a convenient and effective valvegrinder for automobilists, particularly, and of a size which can becarried conveniently on the car with other needed tools, so that if aleaky valve or valve seat be found it can at once be put in good workingorder and without calling in an expert to do the work. To these ends thetool or device comprises a main shaft s which may have a total length ofnine inches, more or less, and a casing or head c of such size as to becomfortably grasped by the hand and in which said shaft is mounted torotate or rather oscillate within suitable working limits, suchoscillation being designed to give the valve a corresponding movement.

The said shaft carries a valve engaging wrench plate 2 or equivalentmeans in a slot in its lower extremity and which is secured in said slotby a cotter pin 3, or its equivalent, for convenient removal orreversal, the said plate having teeth et at its opposite edgesdifferently spaced apart to engage valves of different sizes.

The said head or casing is built in two stamped sheet-metal sections orhalves 5 and 6, respectively, which are constructed with correspondingdiagonal or inclinedA inner edges adapted to match and one of which hasspurs 7 at its inclined edge and the other holes 8 in which said spursare engaged and Specification of Letters Patent.

Patented Dee. 1s, 1917.

Application filed Becember 4, 1916. Serial No. 134,859;y

tends across the axis of said shaft to the opposite side, while theupper bearing and thrust support for the shaft is inthe topr The -saidbearings are `re-l of section versely flanged or sleeved, and al vsocket9 is seated from theinside in the upper bearing and carries a ball 10 inits top to take the direct thrust of the shaft. rlhe said socket isflared or flanged inside against the wall of the head about the sleevetherefor and also has a plurality of spurs 12 engaged thro-ugh said wallto fix it in place, and a Cotter pin 13, or its equivalent, throughshaft s over its lower bearing in the casing c confines the shaft inworkingrpositio-n.

Operation or oscillation of shaft s is effected by means of a yoke 14engaged therewith at its divided end by cotter pin l5, or itsequivalent, and said yoke is `pivotally en? gaged at its closed end by ashort arm 16 views 2 and-5 and may be said to be equal to about 115degrees or a quarter of a complete circle. l v

The said shaft 17 is supported in a thim-V ble 18 set into a flangedopening in the side of casing c at a point directly opposite the pivotpin 15 of yoke 14 in said shaft s, and is fixed in place by spurs 19through the wall of the head similar to the socket 9. This provides alsofor removal of said thimble and socket when necessary but otherwisefixes them firmly in place. v

The casing being struck up from sheet metal it is possible to formunitary bearings therein for the respective shafts, and especially sincethe casing is divided on diagonal lines and which makes the part 5 onemember with a bearing struck in its top, and the ioo part or section 6another member with bearings in its bottoni and side respectively. Thediagonal division of the casing is also advantageous in assembling,since all the operating connections are inside, because it en-y ablesboth shafts to be inserted in section 6 and the Working connectionsbetween the same to be made and held together before the section 5 withits end thrust ball bearing in cup or socket 9 is put in place. A likeconvenience occurs when for any reason the parts are Vto be separated,as for repairs or replacement.

lWhat l claim is:

l. A valve grinding tool having a casing and a drive-shaft and a drivenshaft mounted at right angles to each other therein, a yoke engaged withsaid driven shaft and a bent arin fixed on said drive shaft andpivotally connected with said yoke.

2. A valve grinding' tool having` a drive shaft and a driven shaft and acasing supporting said shafts, inv combination with yoke pivoted on saiddriven shaft and a curv-ed arm fixed on the end of said drive shaft andpivotally connected with the otherwise free end of said yoke.

3. A valve grinding tool havinga shaft provided with an open slot in itslower end and a reversible valve Wrench in said slot constructed atopposite edges with teeth variably spaced apart to engage valves ofdifferent sizes, and means to support and actuate said shaft.

4. A. valve grinding tool having a casing adapted to be gripped in ahand and consisting of tivo struck-up sheet metal sections divideddiagonally across the axis thereof from top to bottom, the outer of saidsections provided with a shaft bearing in the top thereof and a cap insaid bearing, and the inner section having bearings in its bottoni andside respectively, the latter bearing having a thimble therein, a driveshaft through said thinible bearing and a driven shaft in said otherbearings, and said shafts operatively connected.

5. A valve grinding tool comprising a casing of a size adapted to begrippedin one hand and constructed invtvvo sections united on a. linediagonal to the middle thereof from top to bottoni and said sectionshaving opp-:i-l site bearings in their top and bottoni respec tively, adriven shaft centrally through said casing supported in said bearings,said top bearing being adapted to take the end thrust of the shaft, anda drive shaft through the side o-f the casing operatively connected withthe said driven shaftand adapted to oscillate the same.

Signed at Cleveland, in the county of Cuyahoga, and State of Ohio, this16 day of November, 1916.

JACOB B. RGSE.

Copies of'this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

